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OpenStudy (anonymous):
Which is the correct formula to use for the following hypothesis test: Two types of flares are tested for their burning times and the results are Brand X: x = 19.4, s = 1.4, n = 35; Brand Y: x = 15.1, s = 0.8, n = 40. Test the claim that the two populations have equal means.
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OpenStudy (dumbcow):
use 2-sample t test
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